Alert archive / Florida / Red Flag Warnings in 2008
Red Flag Warning 25, NWS Melbourne, FL
NWS Melbourne, FL issued this red flag warning at Apr 21, 2008, 2:29 AM EDT for 6 counties in Florida. It took effect at Apr 21, 2008, 11:48 AM EDT. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 21, 2008, 2:29 AM EDT (06:29 UTC)
- In effect from
- Apr 21, 2008, 11:48 AM EDT
- Expired
- Apr 21, 2008, 7:00 PM EDT
- In force
- 7 hr
- Issued by
- NWS Melbourne, FL
Counties Lake County, FL, Okeechobee County, FL, Orange County, FL, Osceola County, FL, Seminole County, FL, Volusia County, FL
The radar
The Melbourne radar (KMLB), 67 km from the middle of the area, began a volume at 06:29 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Tampa Bay, FL (KTBW), launched 00:00Z, 6.5 hours before the alert went out and 139 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2085 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS82 KMLB 210629 RFWMLB RED FLAG WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 229 AM EDT MON APR 21 2008 FLZ041-044>046-053-144-212300- /O.UPG.KMLB.FW.A.0022.080421T1700Z-080421T2300Z/ /O.NEW.KMLB.FW.W.0025.080421T1700Z-080421T2300Z/ /O.NEW.KMLB.FW.A.0023.080422T1700Z-080422T2300Z/ INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-OSCEOLA- SOUTHERN LAKE- 229 AM EDT MON APR 21 2008 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM EDT THIS EVENING... ...FIRE WEATHER WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING... THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 1 PM THIS AFTERNOON TO 7 PM EDT THIS EVENING. A FIRE WEATHER WATCH HAS ALSO BEEN ISSUED FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING. AFTERNOON HIGH TEMPERATURES REACHING THE MID 80S AND A DRY AIR MASS SHOULD ALLOW INTERIOR SECTIONS IN THE WARNING AREA TO RECEIVE 4 OR MORE HOURS OF RELATIVE HUMIDITY BELOW 35 PERCENT. RELATIVE HUMIDITY MAY FALL BELOW 35 PERCENT FOR SEVERAL HOURS AGAIN TUESDAY AFTERNOON OVER THE SAME AREAS. A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. $$ GLITTO/SEDLOCK
2 follow-up statements
000 WWUS82 KMLB 211548 RFWMLB RED FLAG WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 1148 AM EDT MON APR 21 2008 FLZ058-212300- /O.EXA.KMLB.FW.W.0025.080421T1700Z-080421T2300Z/ OKEECHOBEE- 1148 AM EDT MON APR 21 2008 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 7 PM EDT THIS EVENING. AFTERNOON HIGH TEMPERATURES REACHING THE MID 80S AND A DRY AIR MASS SHOULD RESULT IN 4 OR MORE HOURS OF RELATIVE HUMIDITY BELOW 35 PERCENT. $$ FLZ041-044>046-053-144-212300- /O.CON.KMLB.FW.W.0025.080421T1700Z-080421T2300Z/ /O.CON.KMLB.FW.A.0023.080422T1700Z-080422T2300Z/ INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-OSCEOLA- SOUTHERN LAKE- 1148 AM EDT MON APR 21 2008 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING. A FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING. AFTERNOON HIGH TEMPERATURES REACHING THE MID 80S AND A DRY AIR MASS SHOULD RESULT IN 4 OR MORE HOURS OF RELATIVE HUMIDITY BELOW 35 PERCENT. RELATIVE HUMIDITY MAY FALL BELOW 35 PERCENT FOR SEVERAL HOURS AGAIN TUESDAY AFTERNOON OVER THE SAME AREAS. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. $$
000 WWUS82 KMLB 211838 RFWMLB RED FLAG WARNING NATIONAL WEATHER SERVICE MELBOURNE FL 238 PM EDT MON APR 21 2008 FLZ047-054-059-064-141-147-212300- /O.EXA.KMLB.FW.W.0025.000000T0000Z-080421T2300Z/ SOUTHERN BREVARD-INDIAN RIVER-ST. LUCIE-MARTIN-COASTAL VOLUSIA- NORTHERN BREVARD- 238 PM EDT MON APR 21 2008 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM EDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 7 PM EDT THIS EVENING. THE SEA BREEZE HAS BEEN SLOW TO MOVE INLAND...HENCE MINIMUM RH VALUES HAVE FALLEN BELOW 35 PERCENT ALONG MUCH OF THE COAST. THEREFORE...4 OR MORE HOURS OF RH BELOW 35 PERCENT ARE EXPECTED...ESPECIALLY FOR AREAS ALONG AND WEST OF INTERSTATE 95. $$ FLZ041-044>046-053-144-212300- /O.CON.KMLB.FW.W.0025.000000T0000Z-080421T2300Z/ /O.CON.KMLB.FW.A.0023.080422T1700Z-080422T2300Z/ INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-OSCEOLA- SOUTHERN LAKE- 238 PM EDT MON APR 21 2008 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING... ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING. A FIRE WEATHER WATCH REMAINS IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING. AFTERNOON HIGH TEMPERATURES REACHING THE MID 80S AND A DRY AIR MASS SHOULD RESULT IN 4 OR MORE HOURS OF RELATIVE HUMIDITY BELOW 35 PERCENT. RELATIVE HUMIDITY MAY FALL BELOW 35 PERCENT FOR SEVERAL HOURS AGAIN TUESDAY AFTERNOON OVER THE SAME AREAS. A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST TO OCCUR. $$ FLZ058-212300- /O.CON.KMLB.FW.W.0025.000000T0000Z-080421T2300Z/ OKEECHOBEE- 238 PM EDT MON APR 21 2008 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING... A RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM EDT THIS EVENING. AFTERNOON HIGH TEMPERATURES REACHING THE MID 80S AND A DRY AIR MASS WILL RESULT IN 4 OR MORE HOURS OF RELATIVE HUMIDITY BELOW 35 PERCENT. $$
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Melbourne, FL wrote its last area forecast discussion before this red flag warning went out at Apr 20, 8:52 PM EDT, 5 hours 37 minutes earlier.
Area forecast discussion, Apr 20, 8:52 PM EDT, 5 hours 37 minutes before
EAST CENTRAL FLORIDA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MELBOURNE FL
852 PM EDT SUN APR 20 2008
POST-FRONTAL DRYING HAS MADE ITS WAY INTO THE NORTHERN HALF OF THE
FORECAST AREA. SOUTHERN PORTIONS STILL REMAIN MOIST INVOF SLOWING
FRONTAL BOUNDARY AND A FEW SHOWERS WILL BE PUSHING EWD OFF THE
TREASURE COAST OVER THE NEXT COUPLE OF HOURS. CUTOFF LOW OVER
EASTERN CAROLINAS DRIFTING SWD WELL EAS OF THE STATE LIGHT AND
OFFSHORE FLOW WILL BE PRESENT INTO EARLY MON AS SFC HIGH PRESSURE
BUILDS IN BEHIND THE FRONT. 12KM NAM INDICATES LIGHT FLOW WL LEAD TO
DEVELOPMENT OF AN AFTN SEA BREEZE MON HOWEVER DRYING ASCD WITH DEEP
LAYER W-NW FLOW WL PRECLUDE MENTION OF PRECIP.
&&
.MARINE...PREDOMINANT W-NW WINDS OVER THE COASTAL WATERS AS WEAK
FRONTAL BOUNDARY PUSHES JUST SOUTH OF THE AREA OVERNIGHT. WINDS
SHOULD BE FAIRLY LIGHT AROUND 10 KNOTS OR LESS WITH SEAS 2-4 FEET
EXPECTED OVERNIGHT INTO MONDAY.
&&
.FIRE WEATHER...DRIER AIR WILL CONTINUE TO FILTER IN AS SFC HIGH
PRESSURE BUILDS OVER THE REGION MONDAY. MIN RH VALUES COULD FALL
BELOW 35 PERCENT OVER THE NORTHWEST INTERIOR ROUGHLY ALONG AND NORTH
OF THE I-4 CORRIDOR. WILL LET THE MIDNIGHT SHIFT REEVALUATE SINCE
VALUES LOOK MARGINAL FOR THE EVENT.
&&
.MLB WATCHES/WARNINGS/ADVISORIES...
FL...FIRE WEATHER WATCH FROM MONDAY AFTERNOON THROUGH MONDAY EVENING
FOR INLAND VOLUSIA-NORTHERN LAKE-ORANGE-OSCEOLA-SEMINOLE-
SOUTHERN LAKE.
AM...NONE.
&&
JPHazardous weather outlook, Apr 20, 4:14 AM EDT, 22 hours 15 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MELBOURNE FL 414 AM EDT SUN APR 20 2008 AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141- 144-147-202000- COASTAL WATERS FROM FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE OUT 20 NM- COASTAL WATERS FROM VOLUSIA BREVARD COUNTY LINE TO SEBASTIAN INLET OUT 20 NM- COASTAL WATERS FROM SEBASTIAN INLET TO JUPITER INLET OUT 20 NM- WATERS FROM FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE 20 TO 60 NM OFFSHORE- WATERS FROM VOLUSIA BREVARD COUNTY LINE TO SEBASTIAN INLET 20 TO 60 NM OFFSHORE- WATERS FROM SEBASTIAN INLET TO JUPITER INLET 20 TO 60 NM OFFSHORE- INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-SOUTHERN BREVARD- OSCEOLA-INDIAN RIVER-OKEECHOBEE-ST. LUCIE-MARTIN-COASTAL VOLUSIA- SOUTHERN LAKE-NORTHERN BREVARD- 414 AM EDT SUN APR 20 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA. .DAY ONE...TODAY AND TONIGHT. ...RIP CURRENT IMPACT... A LINGERING LONG PERIOD OCEAN SWELL WILL CONTINUE TO ENHANCE THE RIP CURRENT RISK AT AREA BEACHES TODAY. ASK LOCAL BEACH PATROLS ABOUT CONDITIONS WHEN ARRIVING AT THE BEACH AND ALWAYS SWIM WITHIN SIGHT OF A LIFEGUARD. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. HIGH PRESSURE AND DRIER AIR MOVING INTO THE AREA EARLY IN THE WEEK WILL INCREASE FIRE SENSITIVITY FOR THE NEXT SEVERAL DAYS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY. GLITTO
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 2:29 AM EDT | Fire Weather Watch | MLB | Lake, Orange, Osceola, Seminole, Volusia | 25 hr |
Nearby
Red Flag Warnings in Florida, 2008Every red flag warning in 2008
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.